Wood-polishing machine



(No` Mod-e1.)

J, WILLIS. i l WOOD PQLISHINGMAGHINE. No.w278,647. Patented May 29,1883.

1 N. PETERSA Pmw-Lmngnphef, washmgmn. D. Cy

i UNITED STATES PATENT OFFICE.

JOHN wILLIs, 0F oANroIuoIIIoQ wooo-PoLlsHvlNGMACHINE.

SPECIFICATION forming partl of Letters Patent No..2.7,8,647, dated May 29, 1883 i Application ined April 6, less. (No model.) f o i 1-'0 all whom 'it may concern Be it known that I, JOHN WILLIS, a citizen `of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Wood-Polishin g Machines, of which the following is a specication, reference being had therein to 'the accompanying drawings.

Figure l is aside elevation of my improved apparatus.

casing which surrounds the polishinghead.

Fig. 3 is a plan view of a portion of the air pipe. Fig. 4 is a section of the air-pipe at one ofthe joints.

In the drawings I have represented, at A, a part of awall or frame-work of a mill or structure utilized to provide the main support for the smoothing or polishing apparatus. Said apparatus may beof any well-known or preferred character. In the drawings I have shown one having an. axis, B, situated vertically, and mounted in bearings provided by brackets bb. The axis or shaft carries between .the brackets aisleeve and pulley, C` C', by

which power is imparted to a belt or chain, o, which conveys it tothe operative parts at the outer end. To this shaft or axis B the power can be imparted from 4any suitable point.` I have shown itas being rotated by means of a, shaft, D, having a pulley, d, connected with a pulley, d', on theshaft or axis B by a chain or belt, D'. o

E represents the main part of theswinging `frame or support, it having two hinged con'- nections at e e' with the shaft or axis B. It

extends outwardly from said shaft to any suitable length, preferably narrowing towardthe outer end. In the outer end is a vertical shaft, F, receiving power from the chain or belt c and imparting said power to another shaft, G,

inthe supplemental outer swinging frame, H, pivotally connected with the part E on the line'of the axisor shaft F. The shaft G car.

ries at the'lower end a revolvinghead, I, which maybe utilized tocarry either a metallic cutter oripolishing implement, or which maybe `adapted to have sand-paper or other smoothing and polishing material attached` thereto. This head andthe operative material or de` `vices `carried thereby are inclosed in a casing,

Fig. 2 is a sectional view of the` closed chamber or space directly above the surface of the material that is being operated upon. The casing is shown as being cylindricalin general form, having an open bottom and a closed top or cover, and as being so constructed as to make the length of it adjustable.` This can be done by having the vertical wall made in two or more sections united telescopically and provided with clamping devices,

by which the different sections can be held to-L gether at any required points. Two sections, jj', are shown, the outer lower one,j', being provided with slots jzjz, through which pass clamping set-screws?, engaging with the other section, j, and which can be used to clamp the two sections together. o

There is a space or passage-way between the head I and the casing J, as shown ati, communicating with a chamber, i', above the head I.

.This latter chamber'is connected by means of a tight conduit or pipe with the eye or other suitable part ofa suction-fan at K. 'When the fan is in operation a strong current of .air can be drawn through the tubular connection between the fau and the chamber t'- The air enters Athechamber t" through the annular passage at i, it passing to said passage from a space of considerable area around the head.

vI have shown a sectional tubing made in three main sections,L L' L2. The section L extends fromthe vertical portionl, which com- J, which surrounds it, and which formsian inmunicates directly with the chamber t', to the 'l fintermediate portion, L', with which it is connected by an axial part, l', I'ittin'g into or around a corresponding axial part, Z2, on the section L.. The axis of the said parts Z' and l2 coincide with the axis on the shaft F, so that said sections L and L' of the conduit can be rocked relatively to each other whenthe parts E and H of the frame below are being rocked `or oscillated. The intermediate section, L', is connected with the fan-section L2 in a similar manner-that is to say, by means of two axial parts, Z4 and` Z5, one fitting within the other,

and having an axis of rotation coinciding with the axis of shaft B. When the tubular connection between the fan and the initial dusti chamber z" is made in this way there is'a perfect flexibilityat all thejoints of the mechanism, and there will be no material interference with the air-current passing between the said parts.

I do not wish to be limited to the exactform of the extensible or variable chamber J, as others can be employed more or less similar without departingfrom the spirit ot' my invention.

l ain aware of the fact that heretofore in niachines somewhat similar to this use has been made of tubular ducts, through which the dust was carried away, and Ido not therefore broadly claim suoli ducts as my invention; but in the previous construction of which I have knowledge the sections of the duct were joined in such manner as to necessitate the employment of large chambers at the points of junction. These chambers are objectionable not only on account of the greater expense, but also from the fact that they provide pockets or gathering-places, iii which the dust settles in large quantities, tending to choke up the passageway. When the sections otthe tubes arejoined together in the manner which I have shownthatis to say, by having the end of one inserted directly intothe opposing end ofthe otheranunbroken path is provided, Without pockets orcorners for the deposit of dust, and, moreover, the machine can be made much simpler and at much less expense.

What claim isp 1. In a machine for polishing or sandpapering, the combination ofa swinging sectional frame, the smoothing tool or material carried, thereby,a sectional tubular duct seeuredto the frame and having its sections corresponding to those of the frame, and a chamber carried by the sectional swinging frame, and constructed with an extensible Wall which can be moved toward and from the material'to be operated upon, substantially as set forth.

2. The combination ofthe frame, the polish-v ing or smoothin g tool or material carried thereby, the duct for exhausting the dust-laden air, and the casing which surrounds the -tool or JOHN V/'ILLlSd4 A Witnesses: V

HENRY FISHER, J. P. FAWCETT.

4s polishing material, having the extensible sec- 

